Cigar lighter



y 1938. J. H. COHEN 2,117,703

CIGAR LIGHTER Original Filed July 23, 1932 2 SheetsSheet l bl: 44- 7 G70 3nventor (Ittorneg May 17, 1938. J. COHEN 2,117,703

' CIGAR LIGHTER Original Filed July 25, 1932 2 Sheets-Sheet 2 3nnentor m(Ittorneg Patented May 17, 1938 UNITED STATES PATENT OFFICE AutomaticDevices Corporation,

Bridgeport,

Conn, a corporation of Connecticut Application July 23, 1932, Serial No.624,193 Renewed August'5, 1937 17 Claims.

This invention relates to improved cigar and cigarette lighters,particularly of the types for use in automobiles.

Most lighters of this type, which have been manufactured heretofore, areso designed that it is necessary for the driver to push against amovable igniter unit or to press a switch button for an extended periodof time in order to close an electrical circuit for the purpose ofheating the lighter to incandescence. However, these lighters requiredthe driver to continuously divert his observation from the road to thecigar lighter, in order to observe when the igniting unit thereon washeated to incandescence and in condition for use, the heated wire itselfserving as an indicator. Besides diverting the drivers observance of theroad it necessitated his driving with only one hand while forcing themovable member of the cigar lighter or forcing a push button to circuitclosing position with his other hand over a somewhat extended period oftime.

In order to overcome the latter disadvantage, some lighters have beenconstructed with a bayonet lock or its equivalent, which holds theremovable unit of the cigar-lighter in circuit closing position so thatthe igniting coil would be heated to incandescence without the necessityof pushing and holding the removable unit or push button switch incircuit closing position. However, these cigar-lighters, with thebayonet lock, had the marked'disadvantage of keeping the circuit closedfor an extended time and sometimes even dead shorting the battery of thecar for so long a time that complete recharging was necessary in theevent of the'driver forgetting that he locked the removable ignitingunit in closed circuit condition.

With both of these types of lighters, with and without bayonet lock,which are the types most generally in use, there is a strong likelihoodof keeping the circuit closed over too long a period of time; this, inaddition to'the hereinbefore mentioned disadvantages of requiring theoperator or driver to take one hand fromthe wheel and hold thecigar-lighter in closed circuit condition for an extended period oftime, and to divert his gaze from the road to the cigar-lighter in orderto ascertain when 'it may be lifted from the instrument panel for use.

It is an object of the present invention to prov.vide an electriccigar-lighter in which it is not necessary for the driver to divert hisgaze from the road ahead nor to keep his hand away from the wheelfor-any considerable extent of time,

the elimination of which makes for greater safety while driving the car.

It is a further object of the present invention to provide acigar-lighter which will be maintained in closed circuit condition justlong enough to heat the igniting coil to incandescence, and with nodanger of an excessive drain on the battery.

In its broader aspects, the present invention provides a cigar-lighterwherein it is merely necessary for the driver to move the same in onedirection, whereupon the circuit to the igniting coil will be closed andthe igniting unit will be automatically held in closed circuit positionuntil the igniting coil is heated to incandesence whereup the circuitwill be broken automatically so that there is no further drain upon thebattery, thus, minimizing the skill, care, and eifort on the part of thedriver.

Also, and of particular importance, the lighter of the presentinvention, is arranged to give a suitable warning to the driver whenheated to incandesence and the circuit is opened, so that there is nodanger of the igniti g unit cooling after it is heated, as might occ rif the driver inadvertently waits too long before picking it up for use.

A feature of the present invention is the provision of means for closingthe circuit to the lighter in order to improve the thermal condition ofthe lighter even though the regular thermally responsive circuit closingcontacts are still in the thermally separated and circuit openingposition.

Other features and advantages will hereinafter appear.

In the accompanying drawings:

Figure 1 is a longitudinal sectional view of the cigar-lighter of thepresent invention in normal inoperative position.

Fig; 2 is a view similar to Fig. 1, but with the cigar-lighter in closedor operative position.

Fig. 3 is a plan view of the cigar-lighter.

Fig. 4 is a front view.

Fig. 5 is a detail view showing the thermostatic catch of the presentinvention in the inoperative position.

Fig. 6 is a detail, similar to Fig. 5, but shows the catch in theoperative position.

Fig. 7 is a view similar to Figs. 5 and 6, but shows the catch in itspartly released condition and in position to close a warning devicecircuit.

Fig. 8 is a detail view of a modified form of catch in the closedcondition, similar to Fig. 6.

Fig. 9 is a longitudinal sectional view, similar to Fig. 1, but with amodified form of catch and circuit closer, in the normal inoperativeposition. Fig. is a view similar to Fig. 9, but shows the parts in theoperative position.

Fig. 11 is a plan view of the lighter shown in Figs. 9 and 10.

Fig. 12 is a front view.

Fig. 13 is a detail view of the circuit closer and thermostatic catch ofthis form of the invention in the open inoperative position, similar toFig. 9.

Fig. 14 is a detail view, similar to Fig. 13, but shows the catch inclosed circuit position.

Fig. 15 is a detail .view, similar to Fig. 14, but

shows the catch in its partially released position,

and in position to close an auxiliary warning device circuit.

Fig. 16 shows the catch and circuit closing parts returned to the openinoperative position.

Fig. 17 is a View similar to Fig. 16 of the invention showing the catchused to effect an auxiliary closing of the circuit even though the catchis thermostatically maintained in an open position.

Fig. 18 is a view similar to Fig. 13, but shows the catch and circuitcloser parts made of regular material, rather than bimetallic material.

Fig. 19 is a detail view, similar to Fig. 18, in the closed circuitposition and about to be released.

Fig. 20 is a wiring diagram.

For convenience and clarity in the following description, the presentinvention is shown as applied to what may be termed sleeve-typecigar-lighters for use with automobiles, similar to the lighterdisclosed in my copending application, Serial No. 357,030, but it shouldbe under stood that it may also be used with other types ofcigar-lighters. Broadly, the cigar-lighter comprises a base member 22and a removable igniting unit 23 which may be mechanically andelectrically separated from the base member for use.

The base member 22 comprises a socket 24 adapted to be passed through asuitable aperture in an instrument panel 25 of an automobile, or otherconvenient location, until a flange 26 at the front end thereof engageswiththe front face of the panel. The socket is rigidly secured in placewith a U-shaped yoke 21 fitted over an outer sleeve 28 and a clampingnut 29. The outer sleeve is preferably rigidly secured to the socket 24by a spun-over flange 3D.

A contact carrying sleeve 3| is insulatedly mounted in the outer sleeve28, and at its forward end there is secured a main contact 32 having amain body portion 33 shaped similar to a washer and one or more integralhook-shaped fingers 34 extending therefrom. The contact carrier sleeveis secured in place by passing a washer 35 and tube 36 of insulationover the contact sleeve 3|, passing an auxiliary contact 31 andinsulating washer 38 over the insulating sleeve 36, and then passing theentire assembly through a 'bore 39 of the outer sleeve 28, where it isrigidly secured to the latter part with the nut 40 and insulating washer4|. These various parts of insulation just described prevent electricalconnection between the contact sleeve 39 and outer sleeve 28 and arepreferably made of mica in order to be heat-resisting.

The base member is completed with a slide 42 which carries anintermediate contact 43. This slide comprises a cup 44 which has a freefit within the socket 24. Near its center the cup is provided with acontact and catch stud 45 which is insulated from the cup by suitableinsulating washers. It is held in place by spinning or otherwiseheading-over the end of the shank 46, and when this is done a contactwasher with {"1115 ing fingers 41 forming the intermediate contact 43 issecured to the cup so that current may be passed from the contact 45 tothe fingers. The cup also serves to hold a spring 48 in the socket 24,free from the side walls at one end, while the other end of the springis located in the socket by a shoulder portion 49 of the outer sleeve28. Longitudinal movement of the slide 44 is limited in two directionsby a lanced finger 50 part of the socket 24 being bent into and engagingthe ends of a slot 5| in the cup.

The removable igniting unit 23 comprises a body 52 preferably made ofbakelite or some similar insulating material of a size to slide freelyin the socket 24. At one end it supports a heater unit 53 comprising aspirally wound heating coil 54 in a cup 55. One end of the heating coilis connected electrically to the outer wall of the shell by means of aring 56 which is spun thereover and the other end of the coil isconnected to a stud 51 in the slot. This stud passes through a suitablehole in the shell and is insulated from the latter with suitableinsulating washers. It is mechanically and electrically secured to aring 58 which has a threaded connection 59 with the igniting unit body.The heater unit 53 is provided with a series of holes 60 which allow theincandescent glow of the heating coil to pass through a bore SI of thebody 52 to the front end of the igniting unit 23 where they aremagnified and projected by means of a ruby glass 62, or by a disk ofCatalin or similar light-conducting material.

The wiring circuit for the cigar-lighter comprises a ground connectionthrough the instrument panel 25, flange 26 and the yoke 21 extending oneside 83 of the car battery circuit to the socket 24 portion of the base22 and the other pole of the circuit comprises a wire 53 from thebattery connected to the contact sleeve 3| and rigidly secured theretowith a nut.

Now, of particular importance, the cigarlighter is, according to thepresent invention, arranged to prevent an excessive drain on thebattery, and to lessen the amount of attention required from the driver.To this end, there is provided a novel catch for holding the ignitingunit in energizing position and a novel circuit closer switchingarrangement for automatically controlling the circuit between thesliding contact stud 45 and the stationary main contact 32.

This special catch and thermostatically controlled switch is, accordingto the present invention, made as a unitary structure; that is, both areembodied together and it is thereby possible to effect a marked economyin the cost of manufacture, because fewer parts are required and asingle assembly and adjustment takes care of both the catch and thethermostatically controlled switch. In its present preferred form thiscombined catch and thermostatically controlled switch comprises the maincontact 32, made of bimetallic material in order to be responsive tothermal conditions of the latter. The fingers thereon are of narrowwidth and slightly bowed so that there is a marked tendency for thesefingers to spread or to open up in the direction of the arrows 64 inFig. 7 to the solid line position shown in the latter figure under thein fluence of heat.

These fingers are provided with hooks 5 at their outer ends which areadapted to engage with a bevel G5 on the front end of the main contactstud 45 and be forced apart thereby and. then snapped in back of ashoulder 6! portion of the stud when the sliding sleeve is pushed towardthe bottom of the socket into position shown in Fig. 2.

The contact finger hooks 65 thus positively lock the sliding sleeve 44in the closed position and at the same time complete an electricalconnection from the main contact sleeve 3|, contact 32, and the stud 45to the intermediate contact disk 43 and also through the ring 58 andstud 51 of the removable igniting unit 23 to complete the circuit to theheating coil 54 to energize the coil and bring it to incandescence.

As the heating coil 54 is brought to incandescence some of the heat isradiated from the front face of the coil against the inside of the disk43 and follows through the ring and contact fingers 41. As the fingersare heated in this manner some of the heat follows through to the stud45 and fixed contact fingers 34, and at the same time heats the airwithin the chamber formed by the socket 24 and shell 44, to cause thecontact fingers to expand gradually in the direction of the arrows 64(see Fig. 7) until the hooks 65 move clear or free of the shoulder 61whereupon the spring 48 is free to again move the sliding sleeve 44forwardly in the socket 24 until the movement is stopped by the lancedcar engaging an end of the slot 5| as shown in Fig. 1. At the same timeit pushes the removable igniting unit 23 forwardly in the socket andmoves the contact 45 of the switch into open circuit or de-.

, energizing position shown in Figs. 1, 5 and '7.

It should also be noted that the particular form of switching unit andcontacts provided therefor by the present invention have the verydesirable advantage of making it unnecessary for the operator to twist,push, or in any special manner rotatably align the removable ignitingunit 23 relative to the base 22 when returning the unit to theinoperative position on the base, or to do any involved twisting oraligning when it is desired to move the removable igniting unit into theoperative or energizing position. It is merely necessary to put the plug23 into the socket 24 when placing one with the other and merelynecessary to push against the end of the igniting unit in order to moveit to energizing position.

Normally the igniting unit 23 is in the position shown in Fig. 1 for thedriver or other occupant of the car, after using the unit, merely slidesit into the socket 24 until the cup 55 and ring 56 thereon engages withthe spring contact fingers 41 of the slide 44. The pressure of thespring 48 on the sliding member serves as a stop or indication that theunit has been slid fully into the inoperative position. A spring plunger68 is located in the plug body 52 to impinge against the bore oi thesocket 24 and prevent the igniting unit 23 from working out of thesocket even though the car vibrates badly.

When it is desired to use the cigar-lighter the driver merely grasps theknob portion of the igniter unit body 52 and pushes it deeper into thesocket against the pressure of the yielding spring 48 whereby thebevelled end 66 of the contact plug 45, as the unit slides in the socket24, engages with the hooks 65to spread the fingers 34 until the hookssnap over the shoulder 61 as shown in Fig. 6, to lock the sliding unitin the back and switch closing position. Preferably a long finger I0 islanced inwardly of the socket 24 with a raised portion adapted to engageand complete electrical connection between the socket 24 and ignitingunit if the bore of the socket becomes worn considerably. The operatormay then release his grip on the igniting unit and again use both handsfor driving while the coil 54 is being heated to incandescence.

As the coil comes up to heat, some of the heat travels through the stud45 and gradually moves the fingers of the bimetallic contact member toopen position while the hooks thereon ride over the shoulder portion 61of the stud 45 until a release between the shoulder and hooks iseffected and the igniting unit moved back into the inoperative positionshown in Fig. 1 under the influence of the sliding sleeve 44 and spring48. Thereafter, the driver pulls the lighter from the socket for use.

The light disk 62 at the outer end of the igniting unit 23 serves totransmit an incandescent glow from the heater coil and warn the operatorthat the lighter is in condition for use. However, this wouldnecessitate the driver glancing at the lighter from time to time inorder to know when it was properly heated.

According to the present invention, a positive warning is provided tohelp the driver and make it unnecessary for him to continuously orsporadically observe the lighter. This novel warning device comprises aswitch 1| adapted to be closed automatically when the igniting unit hasbeen brought to the desired degree of incandescence. This switchcomprises the contact member 31 of bimetallic material so arranged thatwhen the igniting unit is in the operative position shown in Fig. 2 andis being brought to incandescence, the heat thereof is transmitted tothe contact member 31 which curves in the direction of the arrow 12 inFig. 7, while the main contact arms or fingers 32 move in the directionof the arrows 64. This warning device contact member is located andadjusted so that it contacts with the finger 34 just before and duringrelease of the contact stud 45 from the hooks 65 as shown in Fig. 7. Thecircuit is completed to a bell 13, or other preferably audible warningdevice, through a wire 14 connected to the contact 31, of one polarity,while current of the other polarity passes through the wire 14a. to thewarning device as shown in the wiring diagram, Fig. 20.

Thus, it is merely necessary for the operator or driver to give theigniter unit 23 a quick push into the operative position in Fig. 2, andthereafter continue driving, or otherwise using both heads, and withoutdiverting his eyes from the road ahead, for the structure provided bythe present invention automatically returns the igniting unitto-inoperative and electrically disconnected positions, and at the sametime warns the operator audibly that the lighter has been put intocondition for use to light a cigarette, or the like. If preferred thewarning device switch H provided by the present invention may be used toclose the circuit to a lamp, such as the lamp 13a, shown by dot and dashlines in Fig. 20, located in a place remote from the cigar-lighter andclose to the regular line of driving vision.

In Figs. 9 to 16 inclusive, there is shown a modified form of thepresent invention. The removable igniting unit 23 in this form oflighter is exactly the same as that shown in the first form of theinvention. The base member 22', however, while like the base member 22of the preferred form of the invention in many respects is provided witha different form of catch and switch unit comprising a contact stud 45'made integral with a contact sleeve 3| and a sliding sleeve 44' isarranged to support and carry a yielding bimetallic contact member 32'with bowed fingers 34' and hooks 65.

The fingers 34' and hooks 65' are normally in the closed position shownin Fig. 9, and are adapted to ride over a bevel 66' on the end of thecontact sleeve 3| and hook into a groove 16 in back of the shoulder 61',as shown in Figs. 10 and 14. With this form of the present invention, aswith the preferred form, it is merely necessary for the operator to pushthe igniting unit 23 longitudinally into the bore of a socket 24'portion of the base 22 until the hooks snap into the groove 16 whereuponcurrent is conducted to the outer end of the heater coil 54 through thestud 11, contact fingers 63', and ring 56, the circuit being completedby the closed line between the panel 25, shell 24, ring 58, and stud 51to the inner end of the coil.

When the switch 15 is closed and as the heater coil is brought toincandescence the spring contact fingers 34' and hooks 65 gradually openfrom the position shown in Fig. 14 in the direction of the arrow 64' andinto the position shown in Fig. 15 until the hooks are free of theshoulder 61' portion of the groove 16, whereupon the sliding unit andhook carried thereby, under the influence of the spring 48, travel inthe direction of the arrow 18 shown in Fig. 16 to move the igniting,unit again into the inoperative position shown in Fig. 9.

As with the preferred form of the invention, this form may be providedwith a warning device, including the contact member 31' insulatedlymounted on the modified form of contact sleeve 3|. Here again the signalcontact 31' is made of bimetallic material and curves inwardly in thedirection of the arrow I2 (see Fig. 15) as the main contact member 32'carried by the sliding sleeve 44 moves outwardly under the .infiuence ofheat in the direction of the arrows has the advantage of making itpossible for the operator to manually manipulate the lighter to obtain afurther degree of incandescence without waiting for the main contacts32' to cooland resume their normal closed position, and to this endthere is provided a flange 19 which contacts with the ends of the hook65' when the igniter is pushed the full extent toward the back of thebase member as shown in Fig. 17.

It should be particularly noted that, according to the presentinvention, the warning device need not be operated as the igniting unitis moving into the operative position, but will only be operated afterthe igniting unit is heated and ready for use. This is accomplished byarranging the signal device contact so that it moves toward the regularcontacts 32 as the lighter is brought to the proper degree ofincandescence. When the signal contact 31 or 3'lis cold, as when theigniting unit 23 is moved'to the operative position, the bevel at theend of the contact stud cannot spread the main contacts sufficiently forthem-to engage the signal contact and close the signal circuit. However,when the various contacts are heated and the main contacts spreadsufliciently to clear the contact stud, for release, the heated signalcontact 31, which has contracted, is in a position to close the signalcircult.

In Figs. 18 and 19 there is shown a further modified form of the presentinvention comprising a yielding contact member 32a, having fingers 34asimilar, to and arranged to ride over the bevel 66' and snap intogrooves 16 in much the same manner as the contact member 32', shown inFigs. 13 and 14, or the contact members 32 shown in Figs. 5 and 6. Theparts are proportioned to expand the arms as the heater coil is broughtto the desired degree of incandescence. This form of yielding contactmember may be used in order to effect greater manufacturing economy andit may be more advantageous than the bimetallic form in lighters whichare brought to incandescence only slowly, or if the cigar lighterconstruction is such that there is a quick flow of heat from the heatercoil to the yielding contact member; in other words, where it is desiredto have a slowly responsive device. Also, it may be preferred to use asolid contact member 31a as a signal contact rather than the bimetallicform. However, with this form, the contact 31a is shielded or mounted toprevent it from receiving a flow of heat from the heater coil andthereby cause it to remain stationary while the yielding contact membersgradually expand from the heat of the coil 54. 2

If preferred, the catch and switch of the presment is such that thehooks 65b on the contact fingers slide first over the bevel and thendown over the second bevel 8| to hook in back of a shoulder 6'") whenthe operator'pushes the igniting unit into place. When the heater coilis brought to incandescence the yielding contact member expands untilthe ends of the hooks 65b reach the bevel 8i. Thereafter, the straightwall or shoulder 61b no longer holds the sliding sleeve back, and as thecontact stud 45b is moved relative to the yielding contact member 321)the bevel 8| expands the heated yielding contact members a slightlygreater extent to close the gap with the signal contact 311). Thus, thebevel 8| and pressure of the spring 48 may be used to close the warningdevice circuit and makes unnecessary any close adjustment between theregular circuit control contacts and the warning device contact.

Cross reference is made to my copending application S. N. 118,838, filedJanuary 2, 1937, which is a division of the present application andwherein are claimed certain. features of the invention herein disclosed.

Other variations and modifications may be made within the scope of thisinvention and portions of the improvements may be used without others.

Having thus described the invention, what is perature of the heatingcoil, adapted to move said plug from its operative positionlongitudinally relative to the base to its inoperative position whensaid coil is heated a predetermined extent and to render said warningdevice operative.

2. In an electric cigar-lighter, the combination of a base member; aunit removably supported in operative and inoperative positions by saidbase member; a heating coil on said unit; means for moving the removableunit in the base member from its operative to its inoperative position;a bimetallic catch associated with said means; a warning device; abimetallic element associated with said warning device, said bimetalliccatch and bimetallic element moving into engagement one with the otherin response to the increase in temperature of the heating coil and inthis movement releasing the first-named means and moving the removableunit to its inoperative position and actuating the warning device.

3. In an electric cigar-lighter, the combination of a base member; aunit removably supported by said base member in operative andinoperative positions; a heating coil on said unit; means forautomatically moving the removable unit in the base member; athermostatic catch responsive to the increase in temperature of theheating coil to release the first-named means; a warning device; and awarning device contact, said thermostatic catch being adapted toautomatically move into engagement with said contact and actuate thewarning device.

4. In an electric cigar-lighter, the combination of a base member; aunit removably supported by said base member; a heating coil on saidunit; means for automatically moving the removable unit in the basemember; a thermostatic catch responsive to the increase in temperatureof the heating coil to release the first-named means; a warning device;a warning device contact; and means for effecting positive relativemovement between the catch and the contact to actuate the warning devicewhen the catch is released by the action of the heating coil.

of a base member; a unit removably supported by said base member inoperative and inoperative positions; a heating coil on said unit;yielding means for automatically moving said unit on the the heatingcoil for controlling said yielding means; and warning means including asecond thermostatic element influenced by the heating coil and adaptedto give an audible warning when the heating oil is heated apredetermined extent and when the yielding means is released by saidthermostatic unit.

6. In an electric cigar-lighter, the combination of a base member; aunit removably supported by said base member and having an operative andan inoperative position thereon; a heating coll on said unit means forautomatically moving the removable unit; a thermostatically controlledunit for controlling said means; a warning de- 65 vice; and athermostatic element for the warning device, said thermostatic catchexpanding and said thermostatic element contracting in response to theincrease in temperature of the heating coil, and adapted tosimultaneously release the yielding means and give an audible warningwhen said coil has been heated a predetermined extent.

7. An electric cigar lighter comprising a holder; an igniting unitremovably supported on the 75 holder and having a heating elementadapted to 5. In an electric cigar-lighter, the combination base member;a thermostatic unit influenced by be electrically connected to theholderto be brought to incandescence for use, said igniting unit beingcompletely removable from the holder for use and having a body carryingsaid heating element and concealing the same from view; means on theigniting unit in light conducting relation with the heating element toindicate the degree of incandescence of the heating element when beingheated for use; signal means responsive to the temperature of theheating element for indicating that the heating element has attained apredetermined temperature; and means, including means responsive to thetemperature of the heating element, to electrically disconnect thelatter from the holder when the heating element attains a predeterminedtemperature.

8. In an electric cigar lighter, the combination of a base member; aunit removably supported by said base member; a heating coil on saidunit; means slidable in the base for closing a circuit to energize theheating unit; means normally urging said means to open-circuit position;a thermostatic catch for holding the circuit closed and adapted torelease the first-named means upon the heating element attaining itsdesired heat; a warning device; and means operated by the thermostaticcatch upon movement into release position for actuating the warningdevice.

9. In an electric cigar lighter, the combination of a base member; aunit removably supported by said base member; a heating coil on saidunit; means slidable in the base for closing a circuit to energize theheating unit; means normally urging said means into open-circuitposition; a thermostatic catch for holding the circuit closed andadapted to release the first-named means upon the heating elementattaining its desired heat; and means for producing an audible signal,said means being operated upon movement of the thermostatic catch intorelease position.

10. In an electric cigar lighter, the combination of a base member; aunit removably supported by said base member; a heating coil on saidunit; means in' the base member for closing a circuit to energize theheating unit; means normally urging said means into open-circuitposition; a thermostatic catch for holding the circuit closed andadapted to release the first-named means upon the heating elementattaining its desired heat; and means operated in response to themovement of the thermostatic catch to release position for producing anaudible signal.

11. In an electric cigar lighter, the combination of a base member; aunit removably supported by said base member; a heating coil on theunit; means slidable in the base for closing the circuit to energize theheating unit; means normally urging said means into open-circuitposition; a thermostatic catch for holding the circuit closed andadapted to release the firstnamed means upon the heating elementattaining its desired heat; and means actuated upon release of thethermostatic catch for producing an audible signal.

12. In an electric cigar lighter, the combination of a base member; aunit removably supported by said base member; a heating coll on saidunit; means slidable in the base member for closing the circuit toenergize the heating unit; means normally urging said means toopen-circuit position; heat-responsive means for holding the circuitclosed and adapted to release the first-named means when the heatingelement has attained its desired heat; and means operated by themovement of the heat-responsive means tact to "open-circuit position; a

into release position for producing an audible signal.

13. In an electric cigar lighter, the combination of a base member; aunit removably supported by said base member; a heating coil on saidunit; means including a contact slidable in the base for closing acircuit to energize the heating unit; means normally urging saidconthermostatic catch for holding the circuit closed and adapted torelease the contact when the heating element has attained its desiredheat; and means operable upon release of said contact by the catch forproducing an audible signal.

14. In a cigar lighter; the combination of base member; a unit removablysupported by said base member; a heating coil on said unit; meansslidable in the base for closing the circuit to ener-,

gize the heating unit; means normally urging said means to open-circuitposition; a thermostatic catch for holding the circuit closed andadapted to release the first-named means for movement into open circuitposition upon the heating element attaining its desired heat; and meansoperated when the first-named means moves into open-circuit position forproducing an audible signal.

15. In an electric cigar lighter comprising a holder; an igniting unitremovably supported on the holder and having a heating element adaptedto be electrically connected to the holder to be brought toincandescence for use, said igniting k Patentlio. 2,117,705..

l l l unit being completely removable from the holder for use and havinga body carrying said heating element and concealing the same from view;-

means on the igniting unit in light-conducting relation with the heatingelement to indicate the 'degree of incandescence of the heating elementattained a predetermined temperature and that,

CERTIFICATE OF CORRECTION.

JOSE/PH H. COHEN. I

the heating element is electrically disconnected from the holder.

16. In an electric cigar lighter comprising a holder; an igniting unitremovably supported on the holder and having a heating element adaptedto be electrically connected to the holder to be brought toincandescence for use, said igniting unit being completely removablefrom the holder for use and having a body carrying said heatin elementand, concealing the same from view; means on the igniting unit inlight-conducting relation with the heating element to indicate thedegree of incandescence of the heating element when being heated foruse; means, including means responsive to the temperature of the heatingelement, to electricallyv disconnect the latter from the holder when theheating element attains a predetermined temperature; and signal meansresponsive to the temperature of the heating element for indicating thatthe heating element has attained a predetermined temperature or that theheating element is electrically disconnected frcm the holder due to theoperation. of the heat-responsive means.

17. In an electric cigar lighter comprising a holder; an igniting unitmovably mounted on the holder and completely removable therefrom foruse; a heating element carried by the igniting unit and adapted to bebrought to incandescence for use, the body of the igniting unitconcealing the heating element from view; means for closing a circuitthrough the heating element when moved to circuit-closing position;means for indicating the degree of incandescence of the heating element;heat-responsive means for opening the circuit when the heating elementattains its predetermined temperature; and signal means actuated whenthe circuit-opening means operates to indicate that the circuit is open,said means operating during the time that the circuit is in openposition due to the action of the heat-responsive means to indicate thatthe circuit cannot be closed by the normal movement 01' the ignitingunit into circuit-closing position.

JOSEPH H. COHEN.

May l7, 1958.

[Itis hereb y certified that error appears inthe printed specificationtr the above mnnberedlpatent requiring correction as follows: Page 1,second column, l1neh15, for" "'incandesence readincandescence and for"whereup" read whereupon; 1ine 25; for "incendesencefread incandescence;page 3,

. 'secon d' coluinn, line 50, for "heads" readhands; page 5, i1rstcolumn, line 55, claim 5-, for "011'? read coil; and line62, claim 6,after "unit insert We. semicolon; and that the s'aid Letters Patentshould be read with this "correotion therein that the same may conior ito the record'ofthenca se inv the Patent Oi fice Signed and sealedv thisSeal) 2rd day of August; D. 19

Leslie Frazer,

Acting Commissioner ofPatents.

